JPH0350054B2 - - Google Patents

Description

[Detailed description of the invention]

The present invention relates to a fireproof panel that satisfies the fireproof performance stipulated by the Building Standards Act, such as fireproof construction and quasi-noncombustibility, is lightweight, has excellent heat insulation properties, and has sufficient mechanical strength. In particular, large or deep concave flat areas on decorative surfaces made of metal plates,
The present invention relates to a fireproof panel that is effective in a panel having a pattern consisting of convex flat portions. In general, various fire prevention regulations are legally established for panels depending on the density of houses. Therefore, there are panels made only of inorganic materials on the market.
A panel that combines inorganic and organic foam,
There are many panels made of resin concrete. However, each of the above-mentioned panels has its own advantages and disadvantages, and has caused various practical problems. In other words, the panels are heavy, brittle, absorb water, and have poor insulation properties.
Although the process for this panel was more complicated, it had the disadvantage that the properties of the two materials offset each other. In addition, the panels have poor insulation properties, require a large amount of resin, are high in cost, have a high specific gravity, significantly inhibit foaming, become open-celled, generate water absorption, and reduce adhesion to other components. There was a disadvantage that the fire resistance depended on the heat resistance of the resin itself. Furthermore, when the decorative surface is formed with a pattern consisting of uneven parts, residual stress remains in an unstable state on the decorative surface, and there is a drawback that it becomes noticeable on the decorative surface depending on temperature (100℃) and pressure. Ta. The present invention is the result of intensive research aimed at easily solving these problems, and one purpose is to improve the fire resistance, and the other purpose is to reduce the drawbacks of each panel shown in ~ above. However, another purpose is to create a panel that incorporates these characteristics, and to suppress oil canning of the surface material and improve the mechanical strength of the panel. An embodiment of the fireproof panel according to the present invention will be described in detail below using the drawings. FIG. 1 shows a schematic longitudinal section of a fire protection panel according to the invention. In the figure, reference numeral 1 denotes a surface material, which is made of a thin metal plate such as a surface-treated steel plate, an aluminum plate, a copper plate, or a stainless steel plate, and has a concave flat portion 3 (hereinafter simply a concave portion) on at least the decorative surface 2, as shown in FIG. 3), convex flat part 4 (hereinafter simply referred to as convex part 4)
A pattern 5 consisting of is formed. This pattern 5 has concave portions 3 and convex portions 4 that are continuous or independent, and their shape and distribution are arbitrary. For example, the ratio of concave and convex parts 3 and 4 may be 1:1, or concave,
The height difference Δh between the convex portions 3 and 4 is approximately 0.5 to 5 mm. This depends on the distribution of the non-combustible layer 6, the adhesion area of the synthetic resin foam layer 7, the contact area between the non-combustible layer 6 and the synthetic resin foam layer 7, and the workability when filling the back surface of the convex portion 4 with the non-combustible layer 6. , which is also provided to apparently suppress the oil can.
Reference numeral 6 denotes a noncombustible layer which is filled in the back surface of the convex portion 4 of the surface material 1, the so-called concave flat portion 4' (hereinafter simply referred to as the recess 4') on the back surface of the surface material 1, and is mainly made of synthetic resin foam as described later. This is useful for minimizing deterioration of physical properties such as the adhesion of the body layer 7 to the surface material 1 and the heat insulation properties of the synthetic resin foam layer 7 itself, thereby significantly improving fire protection. The material is one that releases water under high heat and melts and foams to form an inorganic foam layer, such as water glass-based or borate-based materials. The noncombustible layer 6 is formed by laying granular materials with a particle size smaller than the depth of the pattern 5 to form a layer, by forming a droplet into a layer, or by laminating in a slurry state and quickly drying and hardening. Things, etc. 7 is a synthetic resin foam layer which is mainly useful as an adhesive, a heat insulating material, a core material, a cushion material, a moisture proofing material, and a sound insulating material; for example, it is a raw material for polyurethane foam, a raw material for polyisocyanurate foam, and a raw material for phenol foam. , a raw material for polystyrene foam, a raw material for polyethylene foam, etc. It is a synthetic resin raw material that is in a raw material state at the time of discharge, and then foams and hardens, and exhibits self-adhesive properties at that time. Reference numeral 8 denotes a sheet-like backing material, such as aluminum foil, a laminate of paper and metal foil (Pb, Al, Fe), asbestos paper, or a sheet-like material made of asbestos paper and aluminum foil laminated or vapor-deposited. Of course, flame-retardant kraft paper, corrugated asbestos paper, and vinyl chloride are also used. Next, an example will be explained. Example 1 Surface material 1 is 1 mm on the back side of a 0.27 mm thick color steel plate.
recesses 4' are formed, and the distribution ratio of recesses 3 and protrusions 4 on the surface is 1:1. The noncombustible layer 6 is, for example, fluid, water resistant, non-hygroscopic, and quick-drying, and its main component is water glass, in addition to phosphoric acid, silicon, sodium silicate, etc. One or more of aluminum hydroxide, magnesium phosphate, calcium hydroxide, boron, and aluminum sulfate are added. In addition, as the synthetic resin foam layer 7, polyurethane resin is blended at a weight ratio of 170% polyisocyanate to 100% polyol,
A trimerization catalyst is added to this, and the density of free foaming is 28 kg/ ^m3 . moreover,
Aluminum foil (25 microns) is used as the backing material 8.
Asbestos paper (180g/m ² ) will be used. Therefore,
The non-combustible layer 6 is discharged in the form of a slurry into the recesses 4' on the back side of the surface material 1, and is filled almost flush with the top surface of the convex parts on the back side.
dry. Next, immediately after mixing each component, the polyurethane resin raw material is discharged onto the back surface of the surface material 1, the back surface material 8 is laminated on top of it, and the material is fed into a mold (not shown).
Cure at 90℃ for 1 to 10 minutes. The thus manufactured fireproof panel was subjected to a JIS-A-1321 surface test and a bending test. For comparison, a fireproof panel was manufactured that had the same structure as Example 1 except that the noncombustible layer 6 was formed on the entire back surface of the surface material 1. The results were as follows.

【table】

[Table] In addition, ○A is based on JIS-A-14083 test specimen. (b) The synthetic resin foam layer 7 peeled off from the surface material 1, so the process was stopped halfway. C) The synthetic resin foam layer 7 partially protruded from the back surface, and the holes through which gas was released were 1/10 or more of the total thickness. What has been described above is only one embodiment of the present invention, and an adhesive may be added to the material of the noncombustible layer 6, or it may be formed as shown in FIGS.
As shown in the figure, the pattern 5 can also be formed in the form of tiles. In addition, in FIG. 3d, 9 is a material that distributes pearlite grains, vermiculite, and shirasu balloons to help make the inorganic foam layer bulkier and the noncombustible layer 6 thinner when exposed to high heat. It is. As described above, according to the fire protection panel of the present invention, an uneven pattern is formed on a noncombustible surface material, a noncombustible layer is filled only in the concave portions on the back surface, and the top surface of the convex portions on the back surface is used as an adhesive surface. , which has the characteristic of strengthening the adhesion between the synthetic resin foam layer and the surface material. In addition, since the non-combustible layer is distributed corresponding to the recesses on the back side, even when the surface material is exposed to high heat, the surrounding area is first cooled, and
The skin layer portion of the synthetic resin foam layer that was in contact with the top of the convex portion on the back surface of the surface material melts, and the surface material peels off from the skin layer portion on the top surface, where the noncombustible layer melts and the surface material Because there is a cooling gas and an inorganic foam layer between the back surface and the synthetic resin foam layer, it has characteristics that allow it to pass as a quasi-noncombustible material. Furthermore, since the synthetic resin foam layer has a small contact area with the non-combustible layer, it can form an original foam layer, has heat insulating properties, cushioning properties, and strength, and has the characteristics that the amount used can be reduced.

[Brief explanation of drawings]

Fig. 1 is a longitudinal sectional view showing one embodiment of the fire protection panel according to the present invention, Fig. 2 is a perspective view showing a part of the surface material, and Figs. 3 a to d and 4 show other embodiments. FIG. DESCRIPTION OF SYMBOLS 1... Surface material, 2... Decorative surface, 3... Concave flat part, 4... Convex flat part, 5... Pattern, 6... Noncombustible layer, 7... Synthetic resin foam layer.

Claims (1)

[Claims] 1 A surface material in which a pattern consisting of a concave flat part and a convex flat part is formed on at least the decorative surface of a metal plate, and a high heat material that has fluidity only on the back surface of the decorative surface and is buried in a solidified state and laminated. A non-combustible layer that expands to form an inorganic foam layer below, and a heat-insulating layer and core material that is laminated on the back surface of the non-combustible layer and the convex flat part on the back surface of the decorative surface and is fixed together by self-adhesion. Comprising a synthetic resin foam layer and a backing material made of a nonflammable base material that covers the backside of the foam layer,
A fire protection panel characterized in that the convex flat portion on the back surface of the decorative surface is used as an adhesive surface between the surface material and the synthetic resin foam layer, and the back surface material is also bonded together when the foam layer is formed.